title: Two-colour generation in a chirped seeded free-electron laser: a close look.
abstract: We present the experimental demonstration of a method for generating two spectrally and temporally separated pulses by an externally seeded, single-pass free-electron laser operating in the extreme-ultraviolet spectral range. Our results, collected on the FERMI@Elettra facility and confirmed by numerical simulations, demonstrate the possibility of controlling both the spectral and temporal features of the generated pulses. A free-electron laser operated in this mode becomes a suitable light source for jitter-free, two-colour pump-probe experiments.
authors.forename: Benoît
authors.initials: B
authors.lastname: Mahieu
authors.forename: Enrico
authors.initials: E
authors.lastname: Allaria
authors.forename: Davide
authors.initials: D
authors.lastname: Castronovo
authors.forename: Miltcho B
authors.initials: MB
authors.lastname: Danailov
authors.forename: Alexander
authors.initials: A
authors.lastname: Demidovich
authors.forename: Giovanni
authors.initials: G
authors.lastname: De Ninno
authors.forename: Simone
authors.initials: S
authors.lastname: Di Mitri
authors.forename: William M
authors.initials: WM
authors.lastname: Fawley
authors.forename: Eugenio
authors.initials: E
authors.lastname: Ferrari
authors.forename: Lars
authors.initials: L
authors.lastname: Fröhlich
authors.forename: David
authors.initials: D
authors.lastname: Gauthier
authors.forename: Luca
authors.initials: L
authors.lastname: Giannessi
authors.forename: Nicola
authors.initials: N
authors.lastname: Mahne
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Penco
authors.forename: Lorenzo
authors.initials: L
authors.lastname: Raimondi
authors.forename: Simone
authors.initials: S
authors.lastname: Spampinati
authors.forename: Carlo
authors.initials: C
authors.lastname: Spezzani
authors.forename: Cristian
authors.initials: C
authors.lastname: Svetina
authors.forename: Mauro
authors.initials: M
authors.lastname: Trovò
authors.forename: Marco
authors.initials: M
authors.lastname: Zangrando